The magnetron of microwave is essential to its operation. This spare parts takes the form of antenna or a tube. You'll find the magnetron in a box on the one of the side of microwave. It converts the kinetic energy of electrons into electromagnetic... Show moreThe magnetron of microwave is essential to its operation. This spare parts takes the form of antenna or a tube. You'll find the magnetron in a box on the one of the side of microwave. It converts the kinetic energy of electrons into electromagnetic energy, in the form of microwave. When this compenant is broken, the microwave will not heat up or make unusually noise